Purpose: to describe the features of preparing the initial data for developing a hydrodynamic model and to analyze simulation results of the Maly Tegin River section.
Materials and methods. The model of the 15.5 km long Maly Tegin River section was developed using the MIKE software package. The procedure for developing the model involves introducing morphometric, hydrological and hydrodynamic parameters of the modeling object. The model was developed to determine the boundaries of flood zones during the passage of high flow of rare frequency; therefore, cross-sections of both the channel and floodplain parts which reflect the characteristic sections of the river were used. The hydrological parameters were specified as runoff hydrographs of varying probability (1; 3; 5; 10; 25 %) at points (at the beginning of the section) and distributed along the entire length of the section. At the end of the section, the water level of the corresponding probability was specified.
Results. As a result of simulation, the hydraulic parameters of the flow, maximum water levels, flow velocities, water discharges and their dynamics along the entire length of the modeled section for the specified exceedance probabilities were determined in each section. It was found, that the maximum values of the flow velocity fluctuate in the range from 3.88 to 3.68 m/s, water discharge – from 418.69 to 51.09 cubic meters.
Conclusions. In the study, using the example of a model of the Maly Tegin River section, the features of setting morphometric and hydrological initial data in the development of a computer model of the watercourse are considered. The results of scenario studies of the passage of maximum flows of rare frequency on the model of the Maly Tegin River section were obtained, which are of practical interest and can be used to solve survey problems on unexplored watercourses, including designing reservoirs for irrigation.
modeling, cross-sections, hydrological parameters, morphometric parameters, maximum peak flow, watercourse
Ponomarenko T. S., Martynov D. V. Hydrodynamic model of the Maly Tegin River section (development features and analysis of results). Ways of Increasing the Efficiency of Irrigated Agriculture. 2025;95(1):211–224. (In Russ.).
1. Ponomarenko T.S., Breeva A.V., Kovalev S.V., Sulina V.A., 2020. Osobennosti podgotovki iskhodnykh dannykh dlya razrabotki komp'yuternykh gidrodinamicheskikh modeley [Specific features of preparing the initial data for the development of computer hydrodynamic models]. Puti povysheniya effektivnosti oroshaemogo zemledeliya [Ways of Increasing the Efficiency of Irrigated Agriculture], no. 1(77), pp. 14-18, EDN: RXCGMM. (In Russian).
2. Ryzhakov A.N., Ponomarenko T.S., 2020. Sovremennye metody polucheniya gidrograficheskikh kharakteristik vodotokov [Modern methods for obtaining hydrographic characteristics of watercourses]. Puti povysheniya effektivnosti oroshaemogo zemledeliya [Ways of Increasing the Efficiency of Irrigated Agriculture], no. 2(78), pp. 34-39, EDN: WOECZS. (In Russian).
3. Borsch S.V., Simonov Yu.A., Khristoforov A.V., 2023. Prognozirovanie stoka rek Rossii: monografiya [Streamflow Forecasting in Russian Rivers: monograph]. Moscow, Hydro-meteorological Center of Russia Publ., 200 p., EDN: NDYHGD. (In Russian).
4. Gurbanova Ya. K., Ovezmyradov O., 2023. Gidrologicheskie raschety [Hydrological calculations]. Matritsa nauchnogo poznaniya [Matrix of Scientific Knowledge], no. 7-1, pp. 183-185, EDN: ZHDMBY. (In Russian).
5. Schmidt T.S., 1984. Posobie po opredeleniyu raschetnykh gidrologicheskikh kharakteristik [Handbook on Determining the Calculated Hydrological Characteristics]. Leningrad, Gidrometeoizdat Publ., 444 p., (In Russian).
6. Zvyagintseva A.V., Sazonova S.A., Kulneva V.V., 2020. Opredelenie raschetnykh gidrologicheskikh kharakteristik pri dostatochnosti i nedostatochnosti gidrometricheskikh dannykh [Determination of calculated hydrological characteristics with sufficiency and insufficiency of hydrometric data]. Akademicheskiy vestnik ELPIT [ELPIT Academic Bulletin], vol. 5, no. 1(11), pp. 5-17, EDN: LYVGKK. (In Russian).
7. Asarin A.E., Zhirkevich A.N., 2012. O neobkhodimosti razrabotki metodiki rascheta veroyatnogo maksimal'nogo pavodka (PMF) dlya inzhenerno-gidrologicheskikh raschetov v Rossii [On the Need to Develop a Methodology for Calculating the Probable Maximum Flood (PMF) for Engineering and Hydrological Calculations in Russia]. Vodnoe khozyaystvo Rossii: problemy, tekhnologii, upravlenie [Water Management of Russia: Problems, Technologies, Management], no. 4, pp. 53-63, EDN: PBGTDF. (In Russian).
8. Ponomarenko T.S., Breeva A.V., 2021. K voprosu avtomatizatsii gidrologicheskikh raschetov [On the Issue of Automation of Hydrological Calculations]. Puti povysheniya effektivnosti oroshaemogo zemledeliya [Ways of Increasing the Efficiency of Irrigated Agriculture], no. 4(84), pp. 65-69, EDN: KHXKHA. (In Russian).
9. Vinogradova T.A., Vinogradov A.Yu., 2020. Gidrologiya: sootnoshenie teoreticheskoy i prikladnoy gidrologii [Hydrology: relationship between theoretical and applied hydrology]. Gidrosfera. Opasnye protsessy i yavleniy [Hydrosphere. Hazard Processes and Phenomena], vol. 2, iss. 2, pp. 102-111, https:doi.org/10.34753/HS.2020.2.2.102, EDN: PFGGVC. (In Russian).
10. Vinogradov A.Yu., Doganovsky A.M., Obyazov V.A., 2019. Sushchestvuyushchie problemy gidrologicheskikh raschetov. Chast' 1 [Existing issues of hydrological calculations. Part 1]. Gidrosfera. Opasnye protsessy i yavleniy [Hydrosphere. Hazard Processes and Phenomena], vol. 1, no. 1, pp. 143-159, DOI: 10.34753/HS.2019.1.1.004, EDN: QEVTPH (In Russian).
